R94.121Billable
Abnormal vestibular function study
- Chapter
- 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
- Category
- R94
- Effective date
- October 1, 2026
Related codes in category R94
R94Abnormal results of function studiesR94.0Abnormal results of function studies of cnslR94.01Abnormal electroencephalogram [EEG]YesR94.02Abnormal brain scanYesR94.09Abnormal results of function studies of cnslYesR94.1Abn results of functn studies of prph nrv sys & specl sensesR94.11Abnormal results of function studies of eyeR94.110Abnormal electro-oculogram [EOG]YesR94.111Abnormal electroretinogram [ERG]YesR94.112Abnormal visually evoked potential [VEP]YesR94.113Abnormal oculomotor studyYesR94.118Abnormal results of other function studies of eyeYes
Frequently asked questions
What is ICD-10 code R94.121?
R94.121 is an ICD-10-CM diagnosis code for Abnormal vestibular function study.
Is R94.121 a billable code?
Yes. R94.121 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is R94.121 in?
R94.121 falls under Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
When did R94.121 become effective?
R94.121 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to R94.121?
R94.121 belongs to category R94, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.